Extreme heat across South Korea eased after the weekend following a period where temperatures exceeded 40°C [1].
The cooling trend provides relief to millions after a period of intense surface heating that strained public health and infrastructure nationwide.
Analysis from YTN News indicates that a change in the "double-heat-dome" pattern was the primary driver for the temperature drop. This atmospheric phenomenon had previously trapped hot air over the peninsula, particularly affecting the Yeongnam region, including Busan and Gyeongnam [1].
"The change in the double-heat-dome is the main reason the heat wave has subsided," said Gong Hang-jin, a YTN disaster advisory member [1].
Other meteorological factors contributed to the shift. The approach of Typhoon No. 13, known as "Dolphin," brought increased cloud cover that blocked direct sunlight [1]. This shift in weather patterns disrupted the stagnant high-pressure systems that had fueled the extreme temperatures.
Anchor Park Seok-won said that the heat wave, which seemed as though it would not end, finally broke over the weekend [1].
Despite the current relief, experts are monitoring high sea-surface temperatures. These warm waters can influence subsequent weather patterns and potentially fuel further storm activity in the region [1].
The cooling effect is most pronounced in the southern regions, though the shift in the heat dome has provided some respite for the entire country [1].
“Temperatures exceeded 40°C during the heat wave [1].”
The transition from a double-heat-dome to a typhoon-influenced pattern demonstrates the volatility of East Asian summer weather. While the immediate threat of extreme heat has diminished, the combination of high sea-surface temperatures and active typhoons suggests a shift from heat-related risks to flood and wind-related hazards for the remainder of the season.
